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प्रश्न
Find the following ratio.
The ratio of radius to circumference of the circle.
उत्तर
Let the radius of the circle be r units
∴ Circumference of the circle = 2πr units
Radius of the circle : Circumference of the circle = r : 2πr = `r / (2πr) = 1/ (2π) = 1 : 2π`
Thus, the ratio of radius to circumference of the circle is 1 : 2π
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